Artificial stone.



I06. COMPOSITIONS, COATING OR PLASTIC.

PAUL KUHN, OF NEW YORK, N. Y.

ARTIFICIAL STONE.

No Drawing.

Specification of Letters ratent.

Application filed February 17, 1913. Serial No. 748,934.

Patented Aug. 4, 1914.

To all whom it may concern: Be it known that 1, PAUL KUHN, a citi zen of the German Empire, residing in New York, in the borough of the Bronx, county and State of New York, have invented certain new and useful Improvements in Com positions of Matter for Artificial Stone, of which the following is a specification.

This invention relates to an improved 10 composition of matter for making artificial stone, coverings for steam-boilers and steampipes, electric conduits and the like, said composition being cast into molds without burning and especially adapted for interior walls of buildings and other purposes, in which a comparatively light, strong and fireproof material is required; and for this purpose the invention consists of a composition of matter which comprises plaster of Paris, Portland cement, magnesiicarbonate,

ashes, shavings and water. I

The composition is made of the following proportions: laster of,,P.a.13iS-, 6 parts by weight- For ant cemen par s by weight; ma nesium cor ona e. art by weight; ashes. 1 parts by weight 12 parts BY weight- ':1 er. 16 parts by weight. The, ashes and s avings arefirst mois tened and thei'i'ifiijil vith the plaster oTIarimTortlan'd cement, the magnesia carbonate, water being gradually added as required. The shavings used are those from common ine or any other ood. The gortland cem ent and h ma es a retardhthe settingmi thg gustaof aris, so that the liquid and easily' fiowing mass can be readily cast into molds" or shaped as required before setting. The ashes are screened in a mesh to a certain degree of fineness, while the shavings are 40 disintegrated during the mixing of the subor molded into coverings for stern-tamer;

and pipes, into electric conduits and other applications, for which a comparatively light, fireand waterproof material is required. As no burmn is required, the articles made from the improved composition of matter can be furnished much cheaper than cement articles on the one hand, or the burned bricks or other articles on the other hand. The articles made from the improved composition are fireproof, possess the required tensile strgn gth for building purposes, are to a considerable degree waterproof, and can be 'jointed readily by the ordinary mortars in general use.

I claim:

A composition of matter for artificial stone prepared of the following ingredients and proportions: 6'parts of plaster of Paris, 6 parts of Portland cementf'l' p'art'of Iri'agnesium carbonate, 4 parts'of ashes, 12 parts of 'shlayings, 16 parts of watei In testimony, that I claim the foregoing as my invention, I have signed my name in presence of two subscribing witnesses.

PAUL KUHN.

Witnesses:

PAUL GOEPEL, JOHN MURTAGH.

copies of this patent may be obtained (or five cents each, by addressing the "Commissioner of Patents, Washington, D. 0." 

